Copying std::vector contents to TypedArray

Is there a better way to copy the contents of a std::vector to a Matlab Array in C++? The following seems long winded.

V is a std::vector in the code below.

matlab::data::ArrayFactory factory;
matlab::data::TypedArray<double> A = factory.createArray<double>({ 1, V.size() });  

int i = 0;
for (auto e : V) {
    A[i++] = e;
}

Answer 1

[Breno Vincenzo de Almeida]

I managed to do this out after hooours of testing.

matlab::data::ArrayFactory f;
matlab::data::TypedArray<double> A = f.createArray<double>({1, V.size()}, V.data(), V.data()+V.size());

Source: the `matlab::data::ArrayFactory` page in the following link C++ class to create arrays - MATLAB.

But I can't find a way for the ItType method of supplying the data to work.

[Jason Laks]

The code above will not compile using the mex command from matlab's command line in R2020a. Does anyone have a code snippet that will work?

Thanks, J.

My attempt at getting the suggestion to work:

    matlab::data::ArrayFactory f;
    std::vector<double> V(2, 2);
    matlab::data::TypedArray<double> A = f.createArray<double>({1,V.size()}, V.data(), V.data()+V.size());        

[Jason Laks]

Wait... my apologies. The snippet above does compile.

Answer 2

[Paulo Urriza]

Type can be deduced automatically if you used the createArray overload for std::iterator.

matlab::data::ArrayFactory f;
auto A = factory.createArray({1, V.size()}, V.begin(), V.end());